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Home > Archive>Volume 50, Issue 6, 2022 >831-840. DOI:10.11908/j.issn.0253-374x.21259
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Experimental Investigation on Mechanical Properties of S32001 Duplex Stainless Steel at Elevated Temperatures
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1.College of Civil Engineering， Tongji University， Shanghai 200092， China;2.State Key Laboratory for Disaster Reduction in Civil Engineering， Tongji University， Shanghai 200092， China;3.Broad Sustainable Building， Changsha 430121， Hunan， China

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TU511.3

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    Abstract:

    In this paper， a high-temperature steady-state tensile test study of S32001 duplex stainless steel was conducted， and the main mechanical property indexes such as initial modulus of elasticity， nominal yield strength， tensile strength and elongation after fracture， etc. at elevated temperatures were obtained. The applicability of the Rasmussen model and the Gardner model was studied using the test data. Based on the Rasmussen model， the calculation formula of the hardening index of S32001 stainless steel was proposed， and the constitutive relation expression at elevated temperatures was established， while the mechanical properties of S32001 stainless steel at elevated temperatures were compared and analyzed with other types of stainless steel and Q235B structural steel. The study shows that the yield strength and ultimate strength of S32001 stainless steel decreases with the increase of temperature， which is lower than 50 % at room temperature at 600 °C， but the material strength at elevated temperatures is significantly higher than that of S30408 stainless steel， which has more superior fire resistance properties. The results of this paper can be used in the study of structural fire performance and fire resistance design.

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LOU Guobiao, YANG Wei, CHEN Wulong, TAO Yuchao, WANG Meinan. Experimental Investigation on Mechanical Properties of S32001 Duplex Stainless Steel at Elevated Temperatures[J].同济大学学报(自然科学版),2022,50(6):831~840

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  • Received:June 10,2021
  • Online: July 04,2022
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